Facit
[医]断续三股螺旋的原纤维缔合胶原蛋
🗣️ 情景例句
I'm exhausted. I had to work until 2 o'clock this morning.
我累死了。我一直得干到今天早上2:00。
Why not go out for a walk?
干吗不出去散步？
How do you usually come to school?
你平常怎样来上学？